Question

What is the angle of incidence of a ray if the reflected ray is at an angle of
90° to the incident ray?

could anyone tell me what is the answer of this ​

Answer 1

Answer:

Angle of incidence = 45°

Explanation:

According to second law of reflection ,

angle i = angle r

angle i = angle r = 45° (since reflected ray is 90° to the incident ray)

Therefore angle of incidence is 45°.

Answer 2

angle of incidence is equal to angle of reflection so angle of incidence is half of the angle of reflection i.e 45 degree